I need your help creating a custom page template with just the left sidebar (the secondary menu & primary sidebar) and the content. Since it's a standalone custom page I won't be needing to make a child theme.
Can you help me? A hint or some other materials to read would be helpful also.
What I already did.
Because I'm a beginner I started reading the codex section for making a custom page and then proceeded: I took the Full Width template page/php file included in the theme but when I edited the file and included a div area with the left sidebar it actually reverted to a default page - thus including the right sidebar as well. I tinkered with code to the best of my close-to-0 abilities but did not manage to make it work.